
Observe the animal below and answer the following question.

What type of symmetry does this animal exhibit? (Answer only in single word)


Important Questions on Patterns
Match the following
List - I | List - II | ||
(a) | Asymmetry | (i) | Cnidaria |
(b) | Radial symmetry | (ii) | Platyhelminthes |
(c) | Bilateral symmetry and Enterocoelom | (iii) | Porifera |
(d) | Bilateral symmetry without body cavity | (iv) | Hemichordata |
The correct answer is


Observe and identify body symmetry of given animals:

An acoelomate animal with bilateral symmetry is

Some characters are given below:
i. Bilaterally symmetrical
ii. Triploblastic
iii. Segmented
iv. Coelomates
Which of the two phyla is characterized by the above all characters?




A bilaterally symmetrical animal can be divided into mirror images by


The radial symmetry is observed in:
I. Platyhelminthes
II. Coelenterates
III. Aschelminthes
IV. Annelids
V. Echinoderms

Column I | Column II |
A. Asymmetry | 1. Annelida |
B. Radial Symmetry | 2. Ctenophora |
C. Biradial Symmetry | 3. Cnidaria |
D. Bilateral Symmetry | 4. Porifera |


Represent the union of two sets by Venn diagram for each of the following.
is a prime number between and
is an odd number between and

Consider the following statements (A - C) each with two blanks.
A. Animals like Hydra and jelly fish depict (i)___ symmetry whereas earthworm and leech show (ii)____ symmetry.
B. In (iii)____ and (iv)_____ digestive tract has only single opening (mouth) and is said to be incomplete.
C. Trichinella (Trichina worm) Is a cosmopolitan (v)_____ parasite whereas Fasciola, (liver fluke) lives in the bile ducts of the liver of (vi)____.
Which one of the following options, correctly fills any two statements?

Radial symmetry is seen in

Animals | Symmetry | Organisation | Coelom type | |
---|---|---|---|---|
(i) | Ctenophores | Radial | Diploblastic | Pesudo-coelomates |
(ii) | Echinoderms | Bilateral | Triploblastic | Coelomates |
(iii) | Platyhelminthes | Bilateral | Triploblastic | Acoelomates |
(iv) | Annelids | Biradial | Diploblastic | Coelomates |

Organisms, attached to substratum generally possess


Animals are classified based on their symmetry into ..... groups.

